CVE-2026-21445
CRITICAL EXPLOITED NUCLEILangflow < 1.7.1 - Unauthenticated Sensitive Data Exposure and Destructive Operations via API Endpoints
Title source: llmExploitation Summary
CVE-2026-21445 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including chinaxploiter. A Nuclei detection template is also available.
AI-analyzed exploit summary The repository contains an obfuscated Python script using PyArmor, which is unusual for a legitimate PoC. The code is heavily truncated and lacks clear exploit logic, raising suspicions of deception or malware.
Description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.
Exploits (1)
The repository contains an obfuscated Python script using PyArmor, which is unusual for a legitimate PoC. The code is heavily truncated and lacks clear exploit logic, raising suspicions of deception or malware.
Nuclei Templates (1)
html:"Langflow"
References (2)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N